Process of breaking steel bars.



P; V. L. BELLANGER mocsss or anmm 5' APPLICATION FILED M I Patented 001;; 10,1916.

PIERRE VICTOR LEON BELLANGEE, or rears, FRANCE.

rnoonss or BREAKING s'rnni. BARS.

Specification of Letters Patent.

Patented Oct. 10. 1 91 Application filed March 21, 1916. Serial No. 85,694.

To all whom it may concern;

' Be it known that I, PmRRE VICTOR Llion BELLANGER, citizen of the Republic of France, residing at Paris, France, have invented a new and useful Process of Breaking Steel Bars, of which the following is aspecifioation.

This invention relates to a physico-me chanical process of breaking steel bars of properties.

that is tosay flat and pointed. The width of the'flamels applied 1n a direction normal to the length of the bar,

and the latter is acted upon only by the point of the flame.

The molecules. of the metal lose their elasticity, and the bar can be broken cleanly without the condition of the metal being 1n any way modified in, the neighborhood of the point of attack.

It is.not necessary that the notch 'made transversely at one point upon the periphery of the bar perature towhich the metal is subjected is about 700 C. i. p

The bar is placed on two-supports at -a suitable distance apart; and a hard cutter,

arranged transversely of'the bar and above the point attacked,, is caused by pressure or a blow to produce a clean break at the de- Copies of this patent may be obtained for the action of the said,

is a deep one, the fusing tem- 'in presence of two witnesses.

sired point. The fracture shows an absolutely flat section, normal to the longitudinal axis, of the bar, Without tearing and without waste of metal.

In the accompanying drawing: Figure l is a section through the bar after being notchedby the flame of the blow-pipe. Fig.

2 illustrates the'bar supported, and Fig. 3 shows the bar bent under the action of the breaking tool. i

a designates the notches created by the flame of the blow-pipe.

band 0 are two supports upon which the bar rests intermediate its ends, andd is the breaking or cutting tool which is guided against the .barat the side opposite to the notch'a.

Having now particularly described and ascertained the nature of my said invention and in what manner the same is to be performed, I declare that what I claim is:

1. A process of breaking steel bars, consisting in subjecting the bar to the action of anoxid 'z ng flame for modifying the molecular'structure of the metal at the point;

where the bar is to be broken, and finally breaking the bar at the place treated by said flame by subjecting it at the opposite side to the action of a breakingtool, substantially as described. v

2. A process of the charactei described,

consisting in subjecting the bar to be broken to the action of a flat and knife-shaped oxidizing flame transversely to the longitudinal axis. of the bar and to a hard blow at a point located diametrically opposite to the place acted upon by said flame.

In testimony whereof I aflix my signature PIERRE vioror LEON BELLANGEB.

ilve cents each, by addressing the 'Gommieglone'r of Patents, Washington, D. G. 

